High-tech plastic packaging into future development

The 21st century is the century of environmental protection. Environmental issues are increasingly important. Resources and energy are becoming more and more tense. Building a recycling economy and society and taking the road of sustainable development have become the global focus and urgent task, and have become guidelines for the development of all walks of life and human activities. In order to meet the requirements of the new era, in addition to the requirements for increasing the packaging quality and quantity, the plastic packaging materials must be developed to save resources, save energy, be easy to recycle, easy to dispose of or easily consumed by the environment. Nanotechnology or degradation is the starting point for technological development. Plastic packaging new materials, new processes, new technologies, and new products continue to emerge, and they are developing high-performance, multi-functional, actively adopting new materials, new technologies, broadening the application fields, and harmonizing the development of plastic packaging and environmental protection.

High-impervious plastic packaging materials have been rapidly developed and widely used due to the functions of durability, freshness preservation, flavor preservation, and shelf life extension, in addition to the currently widely used polyvinylidene chloride (PVDC), ethylene, and vinyl alcohol copolymers ( In addition to EVOH, in recent years, environmental friendly materials have been developed to promote polyvinyl alcohol (PVA), polyethylene terephthalate (PEN), copolyamide (MXD6), silicon or aluminum oxide vaporized films (soft glass). The development of nano-inorganic materials will be more noticeable.

The use of metallocene polyenes (MHDPE, MLLDPE, MPP) can further improve many properties of flexible packaging such as strength, toughness, transparency, barrier properties, heat resistance and processability. Will be greatly concerned and welcomed by companies.

Functional packaging materials, such as functional cling films, sheets, microporous breathable cling films, selectable permeable packaging films, multi-functional heat shrinkable packaging films, and packaging with special features and convenience (easy to open, easy to reseal) Materials and products will gain greater development. The biggest advantages of aseptic packaging materials and technology are aseptic conditions, no preservatives, no refrigeration, maximum preservation of the original nutrient composition and flavor of the food, which can greatly extend the shelf life, facilitate storage and transportation, and market development. It is very rapid and its use has been continuously expanding. It has expanded into the fields of pharmaceuticals, cosmetics and condiments, in addition to a large share of dairy products and fruit and sweat beverages.

Nano-composite packaging materials will rapidly industrialize with the rapid development of nanotechnology, and their wear resistance, hardness, strength, barrier properties, and plasticity are all significantly enhanced and enhanced. Besides being used for food packaging, they can also be used for special packaging. Such as anti-static, anti-electromagnetic, anti-explosion and invisible, dangerous goods packaging, etc., it is expected that it will promote the traditional plastic packaging material has brought about tremendous changes.

Environmentally friendly (environmentally friendly) plastic packaging materials (or green plastic packaging materials) have become a global concern with the implementation of the IS14000 series of environmental management standards. Among them, plastic packaging materials such as PET and PEN, which are easy to recycle, are easily degraded by the environment. Biodegradable plastics in plastics (EDP) have become hot spots. Others such as zero-pollution foams, thin-walled bottles, and pouches are also receiving attention.

Hot-filled plastic bottles have lower costs, transparent materials, lighter weight, less damage, and better environmental protection than traditional sterile paper packaging, three-piece metal cans, and glass bottle packaging. Because of its advantages, it has been used more and more widely, and its usage accounts for more than half of the entire hot canned market. In addition to PET in hot-filled plastic bottles, BOPP bottles have received more attention in recent years. The BOPP bottle has the following advantages: The heat resistance is improved through the PP stretching process, the canning temperature can be increased to 100 degrees Celsius, the bottle mouth does not require special equipment, and the oxygen barrier performance is greatly improved; the BOPP bottle does not absorb moisture, The storage period is longer and easy to recycle; the product cost is more than 20% cheaper than PET bottles.

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